In September 2020 we replaced our high efficiency gas furnace with a Trane XV19 heatpump with 10kW electric backup heat in the TAM9 airhandler.
The outside unit is exceptionally quiet - can not be heard in low heating mode.
The air handler has a low level electrical hum when in standby mode.
https://sustainabletechnologies.ca/home/heating-and-cooling/evaluation-of-residential-air-and-ground-source-heat-pumps/ https://sca.uwaterloo.ca/~praetzel/personal/ASHP-GSHP_TechBrief_Final.pdf
Date Stage 3 Aux Heat Stage 2 Aux Heat Aux Heat Stage 3 Heat Stage 2 Heat Heat Stage 2 Cool Cool Outdoor High Temp. Outdoor Low Temp. Avg Indoor Temp. Avg Indoor Humidity Fan Only Runtime Vent Sunday 0 0 0 0 0 0 0 0 Monday 0 0 0 0 0 0 0 0 Tuesday 0 0 0 0 0 0 0 0 Wednesday 0 0 0 0 0 0 0 0 Thursday 0 0 0 0 0 0 0 0 Friday 0 0 0 0.1 0 0 0 84 53 69 62 0 Saturday 0 0 0 0 0 0 0 78 57 67 63 0 Sunday 0 0 0 0 0 0 0 72 60 69 66 0 Monday 0 0 0 0 0.1 0 0 60 52 69 64 0.1